simple past tense and past participle of soup up

(horse racing, cant) Of a racehorse: injected with a substance to make it run faster or to change its temperament.

(informal, transitive) To modify the engine of (a motor vehicle) to give a higher performance than the specifications. / (by extension) To embellish with many additions.

present participle of soup up

Third-person singular simple present indicative form of soup up